General Form:

source infile

For ngspice: read the ngspice input file infile, containing a circuit netlist. Ngnutmeg and ngspice commands may be included in the file, and must be enclosed between the lines .control and .endc. These commands are executed immediately after the circuit is loaded, so a control line of ac ... works the same as the corresponding .ac card. The first line in any input file is considered a title line and not parsed but kept as the name of the circuit. Thus, a ngspice command script in infile must begin with a blank line and then with a .control line. Also, any line starting with the string `*#' is considered as a control line (.control and .endc is placed around this line automatically.). The exception to these rules are the files spinit (16.5) and .spiceinit (16.6).

For ngutmeg: reads commands from the file infile. Lines beginning with the character `*' are considered comments and are ignored.

The following search path is executed to find infile: current directory (OS dependent), <prefix>/share/ngspice/scripts, env. variable NGSPICE_INPUT_DIR (if defined), see 16.7. This sequence may be overridden by setting the internal sourcepath variable (see 17.7) before calling source infile.